.menu {
    width: 90%;
    height: 10rem;
    margin-left: 5%;
    margin-top: 2rem;
}

.menu .first-menu {
    border-bottom: 1px solid gray;
    width: 100%;
    height: 3rem;
}

.menu .first-menu .first-menu-title {
    float: left;
    width: 5rem;
    height: 3rem;
    line-height: 3rem;
    text-align: center;
}

.menu .first-menu ul {
    list-style: none;
    display: inline-block;
    margin-top: 0;
    height: 100%;
    width: 91%;
}

.menu .first-menu ul li {
    display: inline-block;
    width: 19%;
    text-align: center;
    line-height: 3rem;
    cursor: pointer;
}

.menu .first-menu ul li:hover {
    color: red;
}

.menu .second-menu {
    border-bottom: 1px solid gray;
    width: 100%;
    height: 4rem;
}

.menu .second-menu .second-menu-title {
    float: left;
    width: 5rem;
    height: 3rem;
    line-height: 3rem;
    text-align: center;
}

.menu .second-menu ul {
    list-style: none;
    display: inline-block;
    margin-top: 0;
    height: 100%;
    width: 91%;
}

.menu .second-menu ul li {
    display: inline-block;
    height: 2rem;
    width: 19%;
    text-align: center;
    line-height: 2rem;
    cursor: pointer;
}

.menu .second-menu ul li:hover {
    color: red;
}

.menu .rank-menu {
    width: 100%;
    height: 3rem;
}

.menu .rank-menu .rank-menu-title {
    float: left;
    width: 5rem;
    height: 3rem;
    line-height: 3rem;
    text-align: center;
}

.menu .rank-menu ul {
    list-style: none;
    display: inline-block;
    margin-top: 0;
    height: 100%;
    width: 91%;
}

.menu .rank-menu ul li {
    display: inline-block;
    height: 2rem;
    width: 19%;
    text-align: center;
    line-height: 3rem;
    cursor: pointer;
}

.menu .rank-menu ul li:hover {
    color: red;
}

.menuSelect {
    color: red;
}

.video-list {
    width: 90%;
    margin-left: 5%;
    height: auto
}

.video-list .sort-menu {
    height: 2rem;
    width: 100%;
    margin-top: 2rem;
}

.video-list .sort-menu span {
    cursor: pointer;
}

.video-list .sort-menu span:hover {
    color: red;
}

.video-list .sort-menu .sort-new {
    display: inline-block;
    width: 4rem;
    height: 2rem;
    line-height: 2rem;
    text-align: center;
}

.video-list .sort-menu .sort-hot {
    display: inline-block;
    width: 4rem;
    height: 2rem;
    line-height: 2rem;
    text-align: center;
}

.video-list ul {
    margin-top: 1rem;
    width: 100%;
    height: auto;
    list-style: none;
    font-size: 0;
}

.video-list ul li {
    position: relative;
    width: 20%;
    height: 12rem;
    display: inline-block;
    font-size: 1rem;
    margin-bottom: 1rem;
    cursor: pointer;
}

.video-list ul li .video-img {
    display: inline-block;
    position: absolute;
    width: 90%;
    height: 60%;
    margin-left: 5%;
    border-radius: 1rem;
}

.video-list ul li .video-title {
    width: 90%;
    margin-left: 5%;
    margin-top: 7.5rem;
    font-size: 0.9rem;
}

.video-list ul li .video-desc {
    width: 90%;
    margin-left: 5%;
    margin-top: 0.5rem;
}

.video-list ul li .video-desc .desc-rank {
    float: left;
}

.video-list ul li .video-desc .desc-count {
    float: right;
}

.page-select {
    float: right;
    margin-top: 2rem;
    margin-bottom: 5rem;
    height: 1.5rem;
    width: 10rem;
}

.page-select span {
    background-color: black;
    color: white;
    border-radius: 0.2rem;
    font-size: 0.8rem;
    height: 1.5rem;
    display: inline-block;
    position: relative;
    line-height: 1.5rem;
    cursor: pointer;
    width: 40%;
    text-align: center;
}